辽河滩海地区西部凹陷古近系岩性和地层圈闭形成条件与发育模式
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摘要
通过三维地震资料解释,结合区域地质背景及层序发育、沉积充填演化特点,对辽河滩海地区西部凹陷古近系岩性和地层圈闭的形成条件及发育模式进行了研究。结果表明,研究区发育砂岩透镜体圈闭和地层超覆圈闭,其中砂岩透镜体圈闭可分为低位浊积扇圈闭、高位滑塌扇圈闭和近岸水下扇圈闭。沉积坡折和断裂坡折是各体系域中岩性、地层圈闭砂体发育的主要条件,岩性、地层圈闭发育模式以低位体系域及高位体系域发育透镜体圈闭、湖侵体系域发育地层超覆圈闭为主。
By means of interpretation on 3D seismic data and referring to the pattern of the sedimentary sequence development and deposition history in the existing reference concerning the west sag of the Liaohe depression beach,the paper manages to find out the forming condition and contribution model of the lithologic and stratigraphic traps occurring in the urea.The paper points out that there are two lithologic and stratigraphic traps,stratigraphic overlap trap and sandstone lenses trap in the study urea,and the sandstone lenses trap can be subdivided into turbidite trap,slump fan and nearshore Subaqueous fan trap.The sand formation in the lithologic and stratigraphic traps are controlled by the slope-break zones which derives from fractures and deposition.Further-more,the types of lithologic and stratigraphic traps are mainly the lens traps formed in LST or HST,and the traps of stratigraphic overlap in TST.
By means of interpretation on 3D seismic data and referring to the pattern of the sedimentary sequence development and deposition history in the existing reference concerning the west sag of the Liaohe depression beach,the paper manages to find out the forming condition and contribution model of the lithologic and stratigraphic traps occurring in the urea.The paper points out that there are two lithologic and stratigraphic traps,stratigraphic overlap trap and sandstone lenses trap in the study urea,and the sandstone lenses trap can be subdivided into turbidite trap,slump fan and nearshore Subaqueous fan trap.The sand formation in the lithologic and stratigraphic traps are controlled by the slope-break zones which derives from fractures and deposition.Further-more,the types of lithologic and stratigraphic traps are mainly the lens traps formed in LST or HST,and the traps of stratigraphic overlap in TST.
引文
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[2]张占文,陈振岩.辽河盆地天然气地质[M].北京:地质出版社,2002:14-58.
[3]陈振岩,苏晓捷.辽河西部凹陷船舱式油气运聚系统特征初探[J].石油勘探与开发,20033,0(4):1-4.
[4]马玉龙,牛仲仁.辽河油区勘探与开发[M].北京:石油工业出版社,1997:213-256.
[5]帅萍.济阳坳陷古近纪古地貌特点及其对沉积的控制作用[J].油气地质与采收率,2010,17(3):24-26.
[6]牛嘉玉,冯有良,鲁卫华,等.中国东部陆相湖盆层序类型与岩性圈闭发育特征[J].石油学报,2006,27(4):18-21.
[7]魏魁生,李培祝,龙更生,等.孤北地区断阶式坡折沉积层序特征与隐蔽圈闭预测[J].现代地质,2003,17(3):303-310.
[8]徐长贵.渤海古近系坡折带成因类型及其对沉积体系的控制作用[J].中国海上油气,2006,18(6):365-371.
[9]鲁卫华,冯有良,谢亚明,等.辽河坳陷西部凹陷鸳鸯沟地区层序地层学划分与岩性圈闭预测[J].油气地质与采收率,2008,15(2):49-52.
[10]张玮,李明杰,孙增玖,等.辽河油田大民屯凹陷东部陡坡带的构造演化特征[J].现代地质,2008,22(4):489-494.
[11]邱贻博,王永诗,刘伟.断裂带内部结构及其输导作用[J].油气地质与采收率,2010,17(4):1-3.
[12]孙洪斌,张凤莲.辽河断陷西部凹陷古近系砂岩储层[J].古地理学报,200,24(3):83-92.
[13]单俊峰,陈振岩,张卓,等.辽河坳陷西部凹陷西斜坡古潜山的油气运移条件[J].现代地质,2005,19(2):274-278.
[14]吴兴录,邹丙方.辽河滩海地区下第三系沉积体系及分布特征[J].特种油气藏,20029,(3):13-18.
[15]林畅松,潘元林,肖建新,等.构造坡折带——断陷盆地层序分析和油气预测的重要概念[J].地球科学——中国地质大学学报,2000,25(3):260-266.
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